fixed tests dir structure. was overcomplicated
renamed unit tests
MESSY:added drop_assembler class & worked w/ test
removed sample_rate from drop_set
refactored mat_drop. uses assembler & signal Map
refactored ascii_drop with assembler
removed ascii_drop and mat_drop in favor of drop

no longer any difference between the classes because of the extra layer
of abstraction introduced with the drop_assembler
no longer pretending that we're checking triax_load
changed name of database.dhDB internally
added tests for flag/unflag get_ids for drop
removed irrelivant test
cleaned up tests
added tests, changed runtest, assembler refactor
fixed processes and added tests
Merge branch 'refactor'
added tests and processes for max_load&xyz
partway through adding all needed processes
edited for merging to master
created preprocessor. first shot at compatibility
removed abs() of signal in processes